Must-Watch: Robert Skidelsky et al.: Too Much Maths, Too Little History: The Problem of Economics

Must-Watch: Robert Skidelsky et al.: Too Much Maths, Too Little History: The Problem of Economics: “The debate hosted by the LSE Economic History Department…

…in collaboration with the LSESU Economic History Society and the LSESU Economics Society. . Speakers: Lord Robert Skidelsky & Dr. Ha-Joon Chang; Prof. Steve Pisckhe & Prof. Francesco Caselli. Chair – Professor James Foreman-Peck:

The LSE is currently the only institution to have a separate EH department. We want to encourage students and academics alike to rethink the methodologies used to explain how our world works.

Do we use the theoretical and econometrical method to create models with assumptions to distil the complexities of human nature and produce measurable results? Or do we use the historical process of considering all factors to provide a more holistic explanation? More importantly, which method should be adopted to better understand increasingly complex economic phenomena in the future?

We are striving to provide our students breadth that exceeds their current theoretical studies. Hence, whilst we recognise the importance of economic history in allowing us to become closer to the truth and produce more intricate portrayal of events, the significance of models and mathematics remains to be emphasised.

Indeed, we wish to have this controversially named debate in order to both highlight the tension between the two disciplines and to produce a more nuanced overview in defence of the future of Economics.

Hoisted from the Archives: Me Reviewing Robert Skidelsky on John Maynard Keynes

J. Bradford DeLong(2001): Review of Robert Skidelsky, John Maynard Keynes: Hopes Betrayed and The Economist as Saviour: Robert Skidelsky (1983), John Maynard Keynes: Hopes Betrayed (London: Macmillan: 033357379x). Robert Skidelsky (1992), John Maynard Keynes: The Economist as Saviour (London: Macmillan: 0333584996). And my review of volume 3: Fighting for Britain.

A couple of months ago I wrote a less-than-totally-enthusiastic review of the third volume of Robert Skidelsky’s Keynes biography–Robert Skidelsky (2000), John Maynard Keynes: Fighting for Britain (London: Macmillan: 0333604563). I wrote that I was disappointed: that:

I was expecting this to be a great book: as stunning as the first two volumes…. But it was not. Do not get me wrong: it is still a good book, well worth reading. Anyone who loved Skidelsky’s first two volumes will like this one…

Now let me repair the damage by writing a totally enthusiastic, totally adulatory review of Skidelsky’s first two volumes. He gives us John Maynard Keynes’s life, entire. And he does so with wit, charm, control, scope, and enthusiasm. You read these books and you know Keynes–who he was, what he did, and why it was so important.

The place to start is with the observation that John Maynard Keynes appeared to live more lives than any of the rest of us are granted.

Keynes was an academic, but also a popular author. His books were read much more widely outside of academia than within it. Keynes was a politician–trying to advance the chances of Britain’s Liberal Party between the wars–but also a bureaucrat: at times a key civil servant in the British Treasury. He was a speculator, trying to make his fortune on the stock market, but also at the core of the ‘Bloomsbury Group’ of artists and intellectuals that did so much to shape interwar culture.

For the litterati it is Keynes of Bloomsbury–his loves, enthusiasms, acts of patronage, and wit–who is the most interesting. For economists like myself, it is Keynes the academic who is the real Keynes: he was the founder of the half-science half-witchcraft discipline of macroeconomics. For those interested in the political and economic history of the twentieth century, it is Keynes the author and politician who is primary. In either case, John Maynard Keynes is the man who has the best claim to be the architect of our modern world–whether it is how our central banks think about economic policy, what our governments believe that they must try to do, the institutions through which they work, or the habit of thought that views the economy not as Adam Smith’s ‘system of natural liberty’ but as a complicated machine that needs adjustment and governance, all of these trace large parts of their roots to the words and deeds of John Maynard Keynes.

How did this man come to be?

That is the question answered by the first volume of Skidelsky’s biography: it is a bildungsroman, a story of growth and development. Skidelsky writes the best narrative interpretation of growing up as a smart and privileged children of academics in late Victorian Britain than I can ever conceive of being written. He writes of how Keynes was one of a relatively small number of brilliant students thrust as a leaven into the mass of Britain’s upper class at Eton, and thus became part of ‘an intellectual elite thrust into the heart of a social elite’ (HB, page 77). An entire cohort of Britain’s upper class thus learned before they were twenty that Keynes could be very smart, very witty, very entertaining–and very helpful if there was a hard problem to be thought through or something to be done.

Skidelsky then writes of Keynes at Cambridge, his joining the secret society of the Apostles, and his eager grasping with both hands of the philosophy of the aesthete common among the students of the philosopher G.E. Moore. As Keynes put it in 1938, he believed that one should arrange one’s life to achieve the most good, where ‘good’ was nothing more or less than:

states of mind… states of mind… not associated with action or achievement or with consequences [but]… timeless, passionate states of contemplation and communion…. a beloved person, beauty, and truth.

Thus Keynes left Cambridge convinced that:

one’s prime objects in life were love, the creation and enjoyment of aesthetic experience, and the pursuit of knowledge. Of these love came a long way first… (HB, page 141).

This embrace of aestheticism was and remained the key to the ‘Bloomsbury’ avatar of John Maynard Keynes, for whom the lodestars were to ‘be in love with one’s friends, with beauty, with knowledge’ and who was and remained an enthusiastic member of the Bloomsbury group, sharing ‘its intellectual values and its artistic enthusiasms,’ and participating ‘in its wild fancy dress parties’ (HB, page 234). Keynes was a man who could celebrate this appointment to the British Treasury with:

…a party for seventeen… at the Café Royale…. Afterwards they went back to 46 Gordon Square for Clive [Bell]’s and Vanessa [Bell, the sister of Virgina Woolf]’s party. There they listened to a Mozart trio… and went upstairs for the last scene of a Racine play performed by three puppets made by Duncan [Grant], with words spoken by the weird-voiced Stracheys. ‘The evening ended with Gerald Shove enthroned in the center of the room, crowned with roses…’ (HB, page 300).

But at the same time Keynes’s pursuit of knowledge was shading over into politics and policy as well. For Keynes it was never enough to pursue knowledge in order to achieve a good state of mind, one had also to be sure to cause the knowledge to be applied to make the world a better place. And how one could act in politics and policy was greatly constrained by the limits of our knowledge. One argument from Edmund Burke, especially resonated with Keynes. As he wrote:

Burke ever held, and held rightly, that it can seldom be right… to sacrifice a present benefit for a doubtful advantage in the future…. It is not wise to look too far ahead; our powers of prediction are slight, our command over results infinitesimal. It is therefore the happiness of our own contemporaries that is our main concern; we should be very chary of sacrificing large numbers of people for the sake of a contingent end, however advantageous that may appear… We can never know enough to make the chance worth taking… (ES, page 62).

Keynes’s industry and intelligence thus made him a trusted and effective member of Britain’s intellectual and administrative elite well before the eve of World War I. Sir Edwin Montagu, especially, pushed him forward both before and during the war. Before the war Keynes decided that he wanted the life of an academic rather than of an administrator: Cambridge rather than the India Office or the Treasury. Yet he kept a strong presence in both worlds, writing his practical and policy-oriented book Indian Currency and Finance in spare moments as he worked on the deeper and philosophical project that was his Treatise on Probability.

Thus it was no surprise that Keynes found an important and powerful job at the Treasury during the national emergency that was World War I. How do you mobilize the financial resources of Britain to support the war effort? How large a war effort could the British economy stand? How could an international trade system geared to consumer satisfaction be harnessed as an instrument of national power? These are all deep and complicated questions. These are what Keynes worked on. But as the death toll from World War I mounted up toward ten million, Keynes became angrier and angrier at this monstrous botch of human lives and social energy that was World War I–and angrier and angrier at the politicians who could see no way forward other than mixing more blood with mud at Paaschendale.

Keynes’s friend David Garnett wrote him a letter condemning his work for the government, calling Keynes:

an intelligence they need in their extremity…. A genie taken incautiously out… by savages to serve them faithfully for their savage ends, and then–back you go into the bottle…. Oh… our savages are better than other savages…. But don’t believe in the profane abomination.

The interesting thing was that Keynes ‘agreed that there was a great deal of truth in what I had said…’ (HB, page 321). And then the whole project of post-World War I reconstruction went wrong at Versailles–when the new German government was treated as a foe rather than a democratic ally, when the object seemed to be to extract as much in plunder and reparations from Germany as possible (‘until the pips squeak’).

Skidelsky quotes South African politician Jan Christian Smuts on the atmosphere at Versailles:

Poor Keynes often sits with me at night after a good dinner and we rail against the world and the coming flood. And I tell him that this is the time for Grigua’s prayer (the Lord to come himself and not to send his Son, as this is not a time for children). And then we laugh, and behind the laughter is [Herbert] Hoover’s horrible picture of thirty million people who must die unless there is some great intervention. But then again we think that things are never really as bad as that; and something will turn up, and the worst will never be. And somehow all these phases of feeling are true and right in some sense… (HB, page 373).

Keynes exploded with a book called The Economic Consequences of the Peace. It condemned the political maneuvering of Versailles and the treaty that resulted in the strongest possible terms. He excoriated short-sighted politicians who were interested in victory rather than peace. He outlined his alternative proposals for peace:

German damages limited to £2000m; cancellation of inter-Ally debts; creation of a European free trade area… an international loan to stabilize the exchanges…

And he prophesied doom–if the treaty were carried out and Germany kept poor for a generation:

If we aim deliberately at the impoverishment of Central Europe, vengeance, I dare predict, will not limp. Nothing can then delay for long that final civil war between the forces of reaction and the despairing convulsions of revolution, before which the horrors of the late German war will fade into nothing, and which will destroy… the civilization and progress of our generation… (HB, page 391).

The Economic Consequences of the Peace made Keynes famous. His horror at the terms of the peace treaty won him friends like Felix Frankfurter, a powerful molder of opinion in the United States. In his book, propelled by ‘passion and despair,’ Keynes ‘spoke like an angel with the knowledge of an expert’ and showed an extraordinary mastery not just of economics but also of the words that were needed to make economics persuasive. Before The Economic Consequences of the Peace Keynes was primarily an academic (with some government experience) with a lot of influential literary friends. Afterwards he was a celebrity. He was not only the private Keynes: ‘the Cambridge don selling economics by the hour, the lover of clever, attractive, unworldly young men, the intimate of Bloomsbury.’ He was also–because of what he had done with his pen after Versailles–‘the monetary reformer, the adviser of governments, the City magnate, the feared journalist whose pronouncements caused bankers and currencies to tremble… conferences jostled with holidays, intimacy merged into patronage. In 1925 the world-famous economist would marry a world-famous ballerina in a blaze of publicity…’ (HB, page 400).

So after World War I Keynes used what power he had to–don’t laugh–try to restore civilization. In Skidelsky’s–powerful and I believe correct–interpretation, Keynes before 1914:

believed (against much evidence, to be sure) that a new age of reason had dawned. The brutality of the closure applied in 1914 helps explain Keynes’s reading of the interwar years, and the nature of his mature efforts… to restore the expectation of stability and progress in a world cut adrift from its nineteenth-century moorings… (ES, page xv).

Skidelsky’s narrative of the mature Keynes–Keynes in the 1920s–is far from being a one-note recounting of the brave but losing struggle against the approaching Great Depression, against political insanity, and against the Nazi Party’s attempted revenge for the German defeat in World War I. Bloomsbury takes up a good chunk of the narrative. Skidelsky’s book includes love letters from Keynes to his future wife Lydia Lopokova:

In my bath today I considered your virtues—how great they are. As usual I wondered how you could be so wise. You must have spent much time eating apples and talking to the serpent! But I also thought that you combined all ages—a very old woman, matron, a debutante, a girl, a child, an infant; so that you are universal. What defence can you make against such praises? (page 181).

But when he tries to paint a picture of what it was like to be a member of the Bloomsbury culture group in the 1920s, Skidelsky’s words fail him. Instead, he resorts to the imaginings of one of the characters of novelist Anthony Powell, who thinks that Bloomsbury must have been:

…every house stuffed with Moderns from cellar to garret. High-pitched voices adumbrating absolute values, rational statse of mind, intellectual integrity, civilized personal relationships, significant form…. The Fitzroy Street Barbera is uncorked. Le Sacre du Printemps turned on, a hand slides up a leg…. All are at one now, values and lovers (page 11).

Virginia Woolf had a different, less happy and romantic view. She wrote of her:

vivid sight of Maynard by lamplight—like a gorged seal, double chin, ledge of red lip, little eyes, sensual, brutal, unimaginate. One of those visions that come from a chance attitude, lost as soon as he turned his head. I suppose though it illustrates something I feel about him. He’s read neither of my books… (page 15)

There is a clear lesson: if your circle includes novelists with wicked pens, read their books and praise them as often as possible.

The bulk of this second volume–The Economist as Saviour–is however devoted to Keynes’s political and intellectual struggle for stable money and full employment, and against deflation, overvalued exchange rates, and the sacrifice of the happiness of today’s populations in the hopes of regaining the imagined benefits of the classical gold standard at some time in the distant future. Keynes spent more than a decade arguing against central bankers who ‘think it more important to raise the dollar exchange a few points than to encourage flagging trade.’ He tried to prevent Britain’s return to the gold standard in 1925 at an overvalued exchange rate, for by overvaluing the exchange rate Britain’s Treasury Minister, Winston Churchill, was willing:

… the deliberate intensification of unemployment. The object of credit restriction, in such a case, is to withdraw from employers the financial means to employ labor at the existing level of prices and wages. This policy can only attain its end by intensifying unemployment without limit, until the workers are ready to accept the necessary reduction in money wages under the pressure of hard facts…. Deflation does not reduce wages ‘automatically.’ It reduces them by causing unemployment. The proper object of dear money is to check an incipient boom. Woe to those whose faith leads them to use it to aggravate a Depression! (page 203).

But in the end Keynes failed.

He was unable to persuade British governments that economic policy should be decided upon by rational thought rather than by obedience to old poorly-understood verities. He failed to achieve any material easing of the terms of the Versailles treaty. He failed to prevent deflation and high unemployment in Britain. He failed to convince people that the Great Depression was a man-made catastrophe that could be cured relatively easily. His pen–though strong–was not strong enough. His allies were too few. And among central bankers and cabinet ministers understanding of the situation in which they were embedded was rare.

So the 1930s saw a change of emphasis. Fewer short polemical articles were written. Instead, Keynes concentrated his attention on writing a book, a book which he thought:

…will largely revolutionize–not, I suppose, at once but in the course of the next ten years–the way the world thinks about economic problems. When my new theory has been duly assimilated and mixed with politics and feelings and passions, I can’t predict what the upshot will be in its effects on actions and affairs. But there will be a great change…’ (pages 520-521). And he was right.

His General Theory of Employment, Interest, and Money did change the world.

It ends with a bold claim for the importance of ideas rather than interests that, in context, has to be read not as a considered judgment but as his desperate hope:

Practical men, who believe themselves to be quite exempt from any intellectual influences, are usually the slaves of some defunct economist. Madmen in authority, who hear voices in the air, are distilling their frenzy from some academic scribbler of a few years back. I am sure that the power of vested interests is vastly exaggerated compared with the gradual encroachment of ideas…. But, soon or late, it is ideas, not vested interests, which are dangerous for good or evil… (page 570).

The extraordinary thing is that Keynes was right.

The other extraordinary thing is that Skidelsky has told the story so well.

So buy these books. Read these books. These are great books. Time spent with them is time well-spent. Robert Skidelsky deserves great honors for having devoted so much of his life to writing down the story of John Maynard Keynes, and writing it down so well.

Are there any problems with the books? A very few–usually caused by the fact that Skidelsky is not a technically-trained economist.

For example, Skidelsky seems frustrated at the apparent appearance and disappearance of the quantity theory of money from Keynes’s thought (and from economic thought in general). He writes that:

In his youthful exuberance Keynes claimed that adherence to [the quantity theory] was a test of scientific competence…. A few years later he cheerfully jettisoned it; in the 1970s back it popped…. If economics were really like physics, it would be impossible for ideas fundamental to the subject to disappear one moment and reappear the next… (HB, page xviii).

To an economist this sounds simply silly. In the Marshallian tradition in which Keynes was trained, it was always clear that the constant-velocity quantity theory of money was just a first approximation–and indeed Keynes’s General Theory is very clear about just how he intends to get a better, second approximation that reduces to the constant-velocity quantity theory when velocity is indeed constant. The quantity theory may have ‘popped back’ into the sights of economic journalists like Skidelsky in the 1970s; but it had always been present in economists’ models under the guise of the LM curve.

And Skidelsky does not seem to be able to clearly set out what Keynes was trying to achieve in his Treatise on Probability. This is no crime: Keynes was not able to set it out clearly either. We today can because we have the mathematical tools–information sets and expected values taken with respect to them–that make Keynes’s objections to what he took to be ’empirical’ theories of probability both cogent and obvious.

Strangest of all–and this I really do not understand–is Skidelsky’s apparent belief that Keynes’s despair in the immediate aftermath of World War I was an echo of ‘the Victorian fear of a godless society.’ Skidelsky thinks that the rise of atheism ‘severely depleted’ the ‘moral capital which sustained the accumulation of economic capital…’ (HB, pages 401-2). As if everyone would have been optimistic after the Versailles peace conference if only everyone had still gone to church on Sundays! The existential crisis of people seeking meaning for their lives when they can no longer find it in transcendental sanction is one thing. The slaughter of Verdun, the panic of hyperinflation, the social waste of high unemployment, and the (temporary) end of economic progress in Europe is quite another.

No one needed the Death of God to cause despair when they looked around them after World War I, and contrasted the world they saw with the world as they had seen it only six years earlier.

Skidelsky on “The Two Big Economic Policy Failures That John Maynard Keynes Would Be Disappointed by Today”

I missed this six months ago:

Julie Verhage: The Two Big Economic Policy Failures That John Maynard Keynes Would Be Disappointed by Today: “The famous economist isn’t around for us to ask him…

…but here is probably the next best thing. Robert Skidelsky… said… Keynes would have found two things upsetting. First, he would be frustrated with the lack of  precautions taken to prevent a huge financial crash like the one we saw in 2008. Secondly, Lord Skidelsky believes Keynes… would have wanted a more ‘buoyant response,’ he said.  Specifically, he doesn’t think Keynes would have liked the Federal Reserve’s quantitative easing….

We’ve been for many years in a state of semi-stagnation, and the recovery is still very very weak in the European Union. The actual recovery measures we’ve taken, particularly quantitative easing, have actually skewed the recovery towards asset buying and real estate, thus threatening to recreate the circumstances that led to crash in the first place. I think he would have been disappointed by those policy failures…

Skidelsky is certainly correct in saying that Keynes would be driven raving mad by the failure of central banks and other regulatory agencies to take seriously the task of managing and bounding the illusion of collective liquidity, in order to curb the dangers created by systemic risk. And he is correct in believing that Keynes would be astonished at counterproductive fiscal austerity and incoherent worries about debt burdens at a time of extraordinarily low current and projected future interest rates.

But I am puzzled by Skidelsky’s third. He believes that Keynes would have seen not a second- but a first-order loss in responding to tighter-than-ideal fiscal policy with looser-than-ideal monetary policy in order to hold aggregate demand harmless. Good Belsky does not, and to my knowledge nobody has succeeded in, producing a coherent simple model of what they mean. I am going to have to put this down as yet another example of a case in which smart, sensible people claim to know more and know different then what is in the simple file-and-communications systems that are our standard economic models.

I can see that responding to inappropriately-austere fiscal policy with easier monetary policy and lower interest rates than in the first-best creates a world with too-little government capital, too-low a level of social insurance spending, an inappropriately low level of government-provided safe assets, and on inappropriately-high level of long-duration risky assets.

What I do not see is why all of this is a first-order loss, and why it is worth opening up a significant Okun Gap relative to full employment and potential output in order to prevent these Harburger Triangles.

So, I am once again pleading for an answer, or an explanation, preferably in the form of a simple model I can wrap my brain around.

Crickets…

Must-read: Robert Skidelsky: “The Optimism Error”

Robert Skidelsky: The Optimism Error: “When a slump threatened… a government could stimulate spending…

…by cutting interest rates and by incurring budget deficits. This was the main point of the Keynesian revolution…. In the 1980s… unemployment prevention became confined to interest-rate policy… by the central bank, not the government. By keeping… inflation constant, the monetary authority could keep unemployment at its ‘natural rate’. This worked quite well for a time, but… the world economy collapsed in 2008. In a panic, the politicians, from Barack Obama to Gordon Brown, took Keynes out of the cupboard, dusted him down, and ‘stimulated’ the economy like mad. When this produced some useful recovery they got cold feet….

Why had the politicians’ nerve failed and what were the consequences? The answer is that in bailing out leading banks and allowing budget deficits to soar, governments had incurred huge debts that threatened their financial credibility. It was claimed that bond yields would rise sharply, adding to the cost of borrowing. This was never plausible in Britain, but bond yield spikes threatened default in Greece and other eurozone countries early in 2010. Long before the stimulus had been allowed to work its magic in restoring economic activity and government revenues, the fiscal engine was put into reverse, and the politics of austerity took over. Yet austerity did not hasten recovery; it delayed it and rendered it limp when it came.

Enter ‘quantitative easing’ (QE). The central bank would flood the banks and pension funds with cash. This, it was expected, would cause the banks to lower their interest rates, lend more and, by way of a so-called wealth effect, cause companies and high-net-worth individuals to consume and invest more. But it didn’t happen. There was a small initial impact, but it soon petered out…. Institutions sat on piles of cash and the wealthy speculated in property. So we reach the present impasse…. Monetary expansion is much less potent than people believed; and using the budget deficit to fight unemployment is ruled out by the bond markets and the Financial Times. The levers either don’t work, or we are not allowed to pull them….

How much recovery has there been in Britain?… The OECD’s most recent estimate of this [output] gap in the UK stands at a negligible -0.017 per cent. We might conclude from this that the British economy is running full steam ahead and that we have, at last, successfully recovered from the crash…. But… although we are producing as much output as we can, our capacity to produce output has fallen…. Growth in output per person in Britain (roughly ‘living standards’) averaged 2.25 per cent per year for the half-century before 2008. Recessions in the past have caused deviations downward from this path, but recoveries had delivered above-trend growth…. This time it was different. The recovery from the financial crisis was the weakest on record, and the result of this is a yawning gap between where we are and where we should have been. Output per head is between 10 and 15 per cent below trend….

Why is it that the recession turned spare capacity into lost capacity? One answer lies in the ugly word ‘hysteresis’…. The recession itself shrinks productive capacity: the economy’s ability to produce output is impaired…. Much of the new private-sector job creation lauded by the Chancellor is… in such low-productivity sectors. The collapse of investment is particularly serious, because investment is the main source of productivity. The challenge for policy is to liquidate the hysteresis – to restore supply. How is this to be done?…

On the monetary front, the bank rate was dropped to near zero; this not being enough, the Bank of England pumped out hundreds of billions of pounds between 2009 and 2012, but too little of the money went into the real economy. As Keynes recognised, it is the spending of money, not the printing of it, which stimulates productive activity, and he warned: ‘If… we are tempted to assert that money is the drink which stimulates the system to activity, we must remind ourselves that there may be several slips between the cup and the lip.’ That left fiscal policy… deliberately budgeting for a deficit. In Britain, any possible tolerance for a deficit larger than the one automatically caused by a recession was destroyed by fearmongering about unsustainable debt. From 2009 onwards, the difference between Labour and Conservative was about the speed of deficit reduction…. From 2009 onwards the main obstacle to a sensible recovery policy has been the obsession with balancing the national budget…. ‘We must get the deficit down’ has been the refrain of all the parties….

It is right to be concerned about a rising national debt (now roughly £1.6trn). But the way to reverse it is not to cut down the economy, but to cause it to grow in a sustainable way. In many circumstances, that involves deliberately increasing the deficit. This is a paradox too far for most people to grasp. But it makes perfect sense if the increased deficit causes the economy, and thus the government’s revenues, to grow faster than the deficit…. In our present situation, with little spare capacity, the government needs to think much more carefully about what it should be borrowing for. Public finance theory makes a clear distinction between current and capital spending. A sound rule is that governments should cover their current or recurrent spending by taxation, but should borrow for capital spending, that is, investment. This is because current spending gives rise to no government-owned assets, whereas capital spending does. If these assets are productive, they pay for themselves by increasing government earnings, either through user charges or through increased tax revenues. If I pay for all my groceries ‘on tick’ my debt will just go on rising. But if I borrow to invest in, say, my education, my increased earnings will be available to discharge my debt….

Now is an ideal time for the government to be investing in the economy, because it can borrow at such low interest rates. But surely this means increasing the deficit? Yes, it does, but in the same unobjectionable way as a business borrows money to build a plant in the expectation that the investment will pay off. It is because the distinction between current and capital spending has become fuzzy through years of misuse and obfuscation that we have slipped into the state of thinking that all government spending must be balanced by taxes – in the jargon, that net public-sector borrowing should normally be zero. George Osborne has now promised to ‘balance the budget’ – by 2019-20. But within this fiscal straitjacket the only way he can create room for more public investment is to reduce current spending, which in practice means cutting the welfare state.

How can we break this block on capital spending? Several of us have been advocating a publicly owned British Investment Bank. The need for such institutions has long been widely acknowledged in continental Europe and east Asia, partly because they fill a gap in the private investment market, partly because they create an institutional division between investment and current spending. This British Investment Bank, as I envisage it, would be owned by the government, but would be able to borrow a multiple of its subscribed capital to finance investment projects within an approved range. Its remit would include not only energy-saving projects but also others that can contribute to rebalancing the economy – particularly transport infrastructure, social housing and export-oriented small and medium-sized enterprises (SMEs). Unfortunately, the conventional view in Britain is that a government-backed bank would be bound, for one reason or another, to ‘pick losers’, and thereby pile up non-performing loans. Like all fundamentalist beliefs, this has little empirical backing….

George Osborne has rejected this route to modernisation. Instead of borrowing to renovate our infrastructure, the Chancellor is trying to get foreign, especially Chinese, companies to do it, even if they are state-owned. Looking at British energy companies and rail franchises, we can see that this is merely the latest in a long history of handing over our national assets to foreign states. Public enterprise is apparently good if it is not British….

Setting up a British Investment Bank with enough borrowing power to make it an effective investment vehicle is the essential first step towards rebuilding supply. Distancing it from politics by giving it a proper remit would create confidence that its projects would be selected on commercial, not political criteria. But this step would not be possible without a different accounting system. The solution would be to make use of comprehensive accounting that appropriately scores increases in net worth of the bank’s assets…